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network: check the size of hardware address before setting MAC address

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Also, skip to set MAC address when the current address equals to the
requrested one.
This commit is contained in:
Yu Watanabe 2021-06-13 05:24:35 +09:00
parent 279082ed49
commit 5388e103ea
1 changed files with 10 additions and 0 deletions
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10
src/network/networkd-setlink.c
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@ -680,6 +680,16 @@ int link_request_to_set_mac(Link *link) {
if (!link->network->mac)
return 0;
if (link->hw_addr.length != sizeof(struct ether_addr)) {
/* Note that for now we only support changing hardware addresses on Ethernet. */
log_link_debug(link, "Size of the hardware address (%zu) does not match the size of MAC address (%zu), ignoring.",
link->hw_addr.length, sizeof(struct ether_addr));
return 0;
}
if (ether_addr_equal(&link->hw_addr.ether, link->network->mac))
return 0;
return link_request_set_link(link, SET_LINK_MAC, link_set_mac_handler, NULL);
}